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Caleta el Cobre 028
Basic information Name: Caleta el Cobre 028
     This is an OFFICIAL meteorite name.
Abbreviation: CeC 028
Observed fall: No
Year found: 2018
Country: Chile
Mass:help 104.9 kg
Classification
  history:
Recommended:  EL6    [explanation]

This is 1 of 117 approved meteorites classified as EL6.   [show all]
Search for other: EL chondrites, Enstatite chondrites, Enstatite chondrites (type 4-7), and Enstatite-rich meteorites
Comments: Approved 3 Aug 2019
Writeuphelp
Writeup from MB 108:

Caleta el Cobre 028 (CeC 028)        ~24°20’S, ~70°15’W

Antofagasta, Chile

Find: 2018 Dec

Classification: Enstatite chondrite (EL6)

History: Found in December 2018 in the Atacama desert.

Physical characteristics: Dark-brown stone with remnants of fusion crust. Many fragments found spread along a few meters downslope. The main fragment weighs 46 kg.

Petrography: (J. Gattacceca, CEREGE) Highly recrystallized texture with dominant enstatite (55 vol%, typical size 200 µm) and plagioclase (14 vol%, typical size 100 µm). Some enstatite crystals have lobate boundaries. Metal makes up about 30 vol% of the meteorite, sometimes as large cm sized lumps. Sulfides (troilite and Mn,Mg sulfides, up to 200 µm, abundance about 4 vol%) are found associated to metal, or as separate grains. Metal and sulfides are also found as µm-sized grains witin some silicates. No chondrule relict was observed.

Geochemistry: Enstatite Fs0.6±0.3Wo1.3±0.1 (n=5). Plagioclase An15.7±0.2Ab80.6±1.7Or3.7±1.8 (n=5). Kamacite (wt%) Fe 91.2±1.3, Ni 5.7±1.1, Co 0.17±0.10, Si 1.62±0.18 (n=3). Mn,Mg sulfides (wt%) Fe 18.5±0.5, S 45.0±0.2, Mn 18.9±2.1, Mg 16.3±0.7, Ca 0.89±0.13, Cr 0.15±0.09 (n=3). Troilite Cr=0.58 wt%, Ti=0.53 wt%.

Classification: Enstatite chondrite EL6. Type 6 from the absence of relict chondrule. EL group from the Si content of metal. The meteorite is unusually metal-rich with about 30 vol% metal. This meteorite was found only 6 km from Caleta el Cobre 024 EL6 chondrite.

Specimens: Type specimen at CEREGE. Main mass with ArtMet.

Data from:
  MB108
  Table 0
  Line 0:
State/Prov/County:Antofagasta
Date:2018 Dec
Latitude:~24°20'S
Longitude:~70°15'W
Mass (g):104938
Pieces:many
Class:EL6
Ferrosilite (mol%):0.6±0.3 (n=5)
Wollastonite (mol%):1.3±0.1
Magnetic suscept.:5.88
Classifier:J. Gattacceca, B. Devouard, P. Rochette, CEREGE
Type spec mass (g):36
Type spec location:CEREGE
Main mass:ArtMet collection, Poland
Finder:anonymous
Comments:work name LM88/F35; submitted by Jérôme Gattacceca
Institutions
   and collections
CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 29 Oct 2018)
ARTMET: Meteorites and Art, Poland (private address; updated 23 Feb 2018)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108, in preparation (2019)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Chile
Coordinates:
     Recommended::   (24° 20'S, 70° 15'W)

Statistics:
     This is 1 of 1543 approved meteorites from Antofagasta, Chile (plus 4 unapproved names) (plus 1 impact crater)
     This is 1 of 1570 approved meteorites from Chile (plus 10 unapproved names) (plus 1 impact crater)
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